Investigation of transonic buffet using high speed PIV

Ferdinand Schrijer; Roberto Solana Perez; Bas van Oudheusden

Investigation of transonic buffet using high speed PIV

Ferdinand Schrijer, Roberto Solana Perez, Bas van Oudheusden

Aerodynamics

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

Transonic buffet of a supercritical airfoil (OAT15A) is investigated by means of schlieren visualization and high speed PIV. The buffet conditions were observed to be strongest at M = 0.7 and a = 3.5o at a frequency of 160 Hz. By means of conditional averaging according to the shock location and movement, the typical buffet cycle is illustrated, confirming observations from literature. In addition, proper orthogonal decomposition is used to further characterize the unsteadiness and it was found that the first 3 modes contain the bulk (> 80%) of the fluctuating energy. Furthermore, through spectral analysis it was found that the typical frequency connected to these modes is equal to the buffet frequency. For mode 4 and higher no peak in the power spectrum is found at the buffet frequency.

Original language	English
Title of host publication	Proceedings of the 5th International Conference on Experimental Fluid Mechanics (ICEFM 2018), Munich, Germany, July 2-4, 2018
Editors	Christian J. Kähler
Publisher	Universitat der Bundeswehr Munchen
Number of pages	6
Publication status	Published - 2018
Event	ICEFM 2018: 5th International Conference on Experimental Fluid Mechanics - Munich, Germany Duration: 2 Jul 2018 → 4 Jul 2018 Conference number: 5 https://www.unibw.de/icefm-2018-munich

Conference

Conference	ICEFM 2018: 5th International Conference on Experimental Fluid Mechanics
Abbreviated title	ICEFM 2018
Country/Territory	Germany
City	Munich
Period	2/07/18 → 4/07/18
Internet address	https://www.unibw.de/icefm-2018-munich

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@inproceedings{49269d6b48c84343989431a65379cd0a,

title = "Investigation of transonic buffet using high speed PIV",

abstract = "Transonic buffet of a supercritical airfoil (OAT15A) is investigated by means of schlieren visualization and high speed PIV. The buffet conditions were observed to be strongest at M = 0.7 and a = 3.5o at a frequency of 160 Hz. By means of conditional averaging according to the shock location and movement, the typical buffet cycle is illustrated, confirming observations from literature. In addition, proper orthogonal decomposition is used to further characterize the unsteadiness and it was found that the first 3 modes contain the bulk (> 80%) of the fluctuating energy. Furthermore, through spectral analysis it was found that the typical frequency connected to these modes is equal to the buffet frequency. For mode 4 and higher no peak in the power spectrum is found at the buffet frequency.",

author = "Ferdinand Schrijer and {Solana Perez}, Roberto and {van Oudheusden}, Bas",

year = "2018",

language = "English",

editor = "K{\"a}hler, {Christian J.}",

booktitle = "Proceedings of the 5th International Conference on Experimental Fluid Mechanics (ICEFM 2018), Munich, Germany, July 2-4, 2018",

publisher = "Universitat der Bundeswehr Munchen",

note = "ICEFM 2018: 5th International Conference on Experimental Fluid Mechanics, ICEFM 2018 ; Conference date: 02-07-2018 Through 04-07-2018",

url = "https://www.unibw.de/icefm-2018-munich",

}

Schrijer, F, Solana Perez, R & van Oudheusden, B 2018, Investigation of transonic buffet using high speed PIV. in CJ Kähler (ed.), Proceedings of the 5th International Conference on Experimental Fluid Mechanics (ICEFM 2018), Munich, Germany, July 2-4, 2018. Universitat der Bundeswehr Munchen, ICEFM 2018: 5th International Conference on Experimental Fluid Mechanics, Munich, Germany, 2/07/18.

Investigation of transonic buffet using high speed PIV. / Schrijer, Ferdinand; Solana Perez, Roberto; van Oudheusden, Bas.
Proceedings of the 5th International Conference on Experimental Fluid Mechanics (ICEFM 2018), Munich, Germany, July 2-4, 2018. ed. / Christian J. Kähler. Universitat der Bundeswehr Munchen, 2018.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Investigation of transonic buffet using high speed PIV

AU - Schrijer, Ferdinand

AU - Solana Perez, Roberto

AU - van Oudheusden, Bas

N1 - Conference code: 5

PY - 2018

Y1 - 2018

N2 - Transonic buffet of a supercritical airfoil (OAT15A) is investigated by means of schlieren visualization and high speed PIV. The buffet conditions were observed to be strongest at M = 0.7 and a = 3.5o at a frequency of 160 Hz. By means of conditional averaging according to the shock location and movement, the typical buffet cycle is illustrated, confirming observations from literature. In addition, proper orthogonal decomposition is used to further characterize the unsteadiness and it was found that the first 3 modes contain the bulk (> 80%) of the fluctuating energy. Furthermore, through spectral analysis it was found that the typical frequency connected to these modes is equal to the buffet frequency. For mode 4 and higher no peak in the power spectrum is found at the buffet frequency.

AB - Transonic buffet of a supercritical airfoil (OAT15A) is investigated by means of schlieren visualization and high speed PIV. The buffet conditions were observed to be strongest at M = 0.7 and a = 3.5o at a frequency of 160 Hz. By means of conditional averaging according to the shock location and movement, the typical buffet cycle is illustrated, confirming observations from literature. In addition, proper orthogonal decomposition is used to further characterize the unsteadiness and it was found that the first 3 modes contain the bulk (> 80%) of the fluctuating energy. Furthermore, through spectral analysis it was found that the typical frequency connected to these modes is equal to the buffet frequency. For mode 4 and higher no peak in the power spectrum is found at the buffet frequency.

M3 - Conference contribution

BT - Proceedings of the 5th International Conference on Experimental Fluid Mechanics (ICEFM 2018), Munich, Germany, July 2-4, 2018

A2 - Kähler, Christian J.

PB - Universitat der Bundeswehr Munchen

T2 - ICEFM 2018: 5th International Conference on Experimental Fluid Mechanics

Y2 - 2 July 2018 through 4 July 2018

ER -

Investigation of transonic buffet using high speed PIV

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